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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+53
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-53/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [InstCombine] use nsw negation for abs libcallsSanjay Patel2018-05-221-8/+8
| | | | | | | | | | | | | | | | Also, produce the canonical IR abs (s<0) to be more efficient. This is the libcall equivalent of the clang builtin change from: rL333038 Pasting from that commit message: The stdlib functions are defined in section 7.20.6.1 of the C standard with: "If the result cannot be represented, the behavior is undefined." That lets us mark the negation with 'nsw' because "sub i32 0, INT_MIN" would be UB/poison. llvm-svn: 333042
* [InstCombine] move misplaced test file and regenerate checks; NFCSanjay Patel2018-05-221-0/+53
llvm-svn: 333039
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